Craquements au démarrage

[RoJeC]

Could open the images.. Somehow no URL coloring in my browser...

But gets more confusing... You show timecode setup, while earlier you mentioned audio problems.

These are 2 different things. How ever I noticed in the Asio screen that for your sound card the 3/4 and 5/6 in/output don't have green light. So this might explain that it's turned off accidently.

As tc can have more issues, please first focus on setting up audio.

[djvano]

Now, it works with asio4all (Cross 32 bit version). But still have signal quality at 70/80% when i lauch Cross... Could you show me your asio4all setup. Mine is http://hpics.li/1f48b81

[RoJeC]

Seems OK. For details on improving tc I can't help you.

As back ground info: at the startup of Cross the program ask the OS (win) for a list of available sound card drivers and a list of available controllers (meeting some criteria). So the only thing you need to do is making sure the OS has recognized the device before you start Cross.

General quality issues for tc are caused by defective cables and/or dust in the connectors. Also try to avoid crossing power cables with audio cables.

[djvano]

maybe 256 samples it's too much for my PC (5,6ms) ...But i don't think so because it have a good config (intel core i5 7th generation, 6 go ram). Or, u46mk2 is defective. I had exactly this same problem with my old PC (pentium 1,2 ghz , 1Go ram). I already had to let it turn a few secondes with a timecode vinyl before i started to mix (signal quality begin at 80/85% and grow up to 100% in 15/20secondes)... I really don't understand why. I can decrease to 128 samples without problem...

[RoJeC]

the samples work opposite from your assumption. It is the length of the audio buffer send to the sound card. The lower the value the more often your CPU needs to generate the next stream into the buffer. So the higher the value the less CPU stress.

The offset is the responsiveness. The lower the value the more responsive as the 'new' stream is heared faster than when the previous buffer is still active.

Cross works with a responsiveness of < 1ms. All other delays are caused by the OS and sound card properties. My sound card runs at 1.1ms even while using several other programs.

The quality of the tc signal really is about the audio quality of the signal coming into the system. The tc vinyl sends a 'perfect' sinus signal where the left and right channel are slightly shifted in sinus position.

As the driver issue seems resolved it's basically a matter of checking the audio path. Make sure all phono/line switches (if present) are set properly. Contact are clean, no interference (e.g. wifi devices). Also make sure there is no monitoring of the inputs in the soundcard settings (can't be handled via ASIO4all).

[djvano]

Switches are ok, contact are clean. Because if one of those point is not ok, the signal quality may always be bad, not only the 30 first seconds... How can make sure there is no monitoring of the inputs in the soundcard settings? It's the only possible thing. Is it possible that there's a monitoring the 30 first seconds?

[djvano]

Sound card is connected to my PC with an USB 3.0. The problem could not come from that?

[djvano]

In fact, it looks like u46mk2 needs a warm up...

[RoJeC]

Not exactly sure how this works for this card, especially with the Win10 enviroment. It should be accessible via the driver or an additional sound card program dedicated to the card.

Monitoring is on or off; no time constraint (at least I've never noticed this at any sound card)

If waiting for 30 secs solves it not likely is driver related. Seems more like a hardware issue somehow. Maybe minor heating of wires/components solves it.

If you have the option to use a USB2 port you'better do that. Most external sound cards are actually USB 1.1. So there is no advantage in using a 5 gbit port if the max throughput of the device is 10MB. And this is only in exceptional conditions when all individual mono ports use the maximum of 1 mbit audiostream.

One other thing that comes to mind which can have some time related impact would be powersave settings. So make sure your setup for CPU and for USB always allows for full power. Don't use eco modes (also hdd!).

[djvano]

I desactivated webcam. Also, i measured latency with a software (don't remember the name but it measure latency caused by all process, background tasks etc etc). A problem was detected with hd audio realtek, so i desactivated the native soundcard too. My PC is good for realtime audio... I will test the new settings tomorrow